System/Library/PrivateFrameworks/VideosUI.framework
VUIUIStackView.h
@interface VUIUIStackView : UIStackView
@property (nonatomic) long long lastOrientation;
@property (nonatomic) BOOL axisFollowsDeviceOrientation;
@property (nonatomic) BOOL alignmentFollowsDeviceOrientation;
- (id)initWithFrame:(struct CGRect { struct CGPoint { double x0; double x1; } x0; struct CGSize { double x0; double x1; } x1; })a0;
@end